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29800105 = 510875483
BaseRepresentation
bin111000110101…
…1011010101001
32002002000001121
41301223122221
530112100410
62542415241
7511203526
oct161533251
962060047
1029800105
1115904295
129b91521
136234cca
143d5a14d
1529399da
hex1c6b6a9

29800105 has 8 divisors (see below), whose sum is σ = 35799552. Its totient is φ = 23813808.

The previous prime is 29800097. The next prime is 29800109. The reversal of 29800105 is 50100892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29800105 - 23 = 29800097 is a prime.

It is a super-2 number, since 2×298001052 = 1776092516022050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29800105.

It is not an unprimeable number, because it can be changed into a prime (29800109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2694 + ... + 8176.

It is an arithmetic number, because the mean of its divisors is an integer number (4474944).

Almost surely, 229800105 is an apocalyptic number.

It is an amenable number.

29800105 is a deficient number, since it is larger than the sum of its proper divisors (5999447).

29800105 is a wasteful number, since it uses less digits than its factorization.

29800105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 29800105 is about 5458.9472428299. The cubic root of 29800105 is about 310.0315784689.

Adding to 29800105 its reverse (50100892), we get a palindrome (79900997).

The spelling of 29800105 in words is "twenty-nine million, eight hundred thousand, one hundred five".

Divisors: 1 5 1087 5435 5483 27415 5960021 29800105